What shoes do frogs wear in the summer?

I fall but never get hurt, I cover the world in white, and disappear with a little warmth. What am I?

What breaks on water but never on land?

How far is it from March to June?

What do you call a snowman in the summer?

What can pass before the sun without making a shadow?

A woman went to Virginia to get a job. She promised her mother she would come back and visit sometime. Then, in the middle of winter, her mother shouted, "April is here!". How is this possible?

I am a thief that steals the green from leaves, paints them red and gold, and makes the world prepare to sleep.

How can 8 + 8 = 4?

What is in seasons, seconds, centuries, and minutes but not in decades, years or days?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

I run but never get tired. I flow but have no legs. I babble but have no mouth. What am I?

What question can never be answered with a "Yes"?